Dakota NDT — T-004-0000 Dual-Element Transducer

1.0 MHz, 1/2 in Dual-Element Ultrasonic Transducer, Potted Top Entry
SKU: T-004-0000

Overview

The Dakota NDT T-004-0000 is a 1.0 MHz dual-element ultrasonic transducer designed for corrosion monitoring and general thickness-measurement applications where increased acoustic penetration is required.

Its relatively low 1.0 MHz operating frequency provides greater sound penetration than higher-frequency probes, making it useful for thicker, attenuative, corroded, rough, or difficult-to-penetrate materials when paired with a compatible ultrasonic thickness gauge.

The transducer features a 1/2 in contact area, separate transmitting and receiving elements, and a permanently potted cable with top entry. This configuration supports reliable field handling while maintaining a practical contact footprint for inspection of piping, tanks, vessels, plates, castings, and other industrial components.

What's Included

Note: Ultrasonic thickness gauge, couplant, calibration block, adapters, and other accessories are not included unless specified separately.

Box Dimensions & Shipping Weight (Estimated)

Actual shipping dimensions and weight may vary depending on cable length and packaging.

Key Specifications

Performance Features

1.0 MHz Low-Frequency Operation
Provides increased acoustic penetration compared with higher-frequency transducers, making it useful for thicker or more attenuative materials.

Dual-Element Construction
Separate transmitting and receiving elements improve near-surface performance and support reliable corrosion thickness measurements.

1/2 in Contact Area
Provides a practical balance between acoustic energy, contact stability, and access to common industrial components.

Potted Cable Design
The permanently attached cable protects the probe-side electrical connection and eliminates the need for a detachable transducer connector.

Top-Entry Configuration
Routes the cable directly from the top of the probe, providing straightforward handling during routine thickness measurements.

Corrosion-Monitoring Capability
Suitable for remaining-wall measurements on components affected by corrosion, erosion, or general material loss.

Why Use a 1.0 MHz Transducer?

Lower-frequency ultrasonic probes are generally selected when stronger penetration is more important than very fine resolution.

Typical advantages of the 1.0 MHz configuration include:

• Improved penetration through thicker materials

• Better performance on acoustically attenuative materials

• Useful response on rough or heavily corroded surfaces

• Greater tolerance of coarse material structure

• Suitable for thicker-wall industrial components

• Practical for applications where higher-frequency probes produce weak or unstable echoes

Actual performance depends on material type, thickness, surface condition, geometry, couplant, and instrument settings.

User-Friendly Design

• Dual-element configuration supports corrosion inspection

• 1/2 in contact area provides stable coupling

• Top-entry cable supports conventional probe handling

• Potted construction eliminates a detachable probe-side connection

• Suitable for spot measurements and manual scanning

• Compact design supports portable thickness-gauge systems

• Useful for field and maintenance inspection work

• Easy to integrate into compatible Dakota ultrasonic systems

Built for Industrial Environments

• Designed for professional ultrasonic thickness gauging

• Suitable for fabrication, manufacturing, maintenance, and asset integrity

• Practical for installed piping and process equipment

• Supports routine corrosion-monitoring programs

• Suitable for tanks, vessels, plates, and structural components

• Lower frequency supports difficult acoustic conditions

• Fixed cable configuration supports repeated field use

• Intended for use with proper calibration and ultrasonic couplant

Material and Inspection Considerations

The T-004-0000 may be appropriate for suitable materials such as:

• Carbon steel

• Stainless steel

• Cast metals

• Aluminum

• Thick plate

• Coarse-grained materials

• Corroded metallic components

• Other materials capable of transmitting ultrasonic energy

Measurement capability varies significantly with material structure, thickness, geometry, temperature, and surface condition.

Compatibility

Compatible with:

• Dakota ultrasonic thickness gauges supporting dual-element transducers

• Instruments configured for 1.0 MHz probe operation

• Corrosion thickness-gauging modes

• Pulse-echo ultrasonic measurement procedures

• Suitable ultrasonic couplants

• Known-thickness calibration blocks

• Appropriate reference standards

• Field and laboratory ultrasonic inspection programs

• Suitable ferrous and nonferrous materials

Instrument model, connector configuration, cable length, thickness range, and material compatibility should be confirmed before ordering.

Ideal Applications

• Corrosion thickness measurement

• Remaining-wall evaluation

• Thick-material inspection

• Pipeline inspection

• Storage-tank inspection

• Pressure-vessel inspection

• Boiler inspection

• Structural steel measurement

• Heavy plate inspection

• Casting thickness measurement

• Erosion monitoring

• Industrial machinery inspection

• Preventive maintenance

• Asset-integrity programs

• Fabrication QA/QC

• Field ultrasonic testing

Typical Components Inspected

The T-004-0000 can be used on suitable components including:

• Process piping

• Storage tanks

• Pressure vessels

• Heavy-wall piping

• Structural plates

• Boilers

• Heat exchangers

• Castings

• Industrial machinery

• Fabricated steel components

• Large metallic parts

• Corrosion-monitoring locations

Inspection Guidelines

• Clean loose scale, dirt, and heavy contamination from the measurement area

• Apply an ultrasonic couplant appropriate for the surface

• Select the correct transducer configuration on the thickness gauge

• Calibrate the instrument using a known reference thickness

• Set or verify the correct material sound velocity

• Position the transducer firmly on the surface

• Maintain stable coupling pressure

• Obtain a repeatable reading

• Take multiple measurements where corrosion is irregular

• Recalibrate periodically according to the inspection procedure

• Record thickness values and measurement locations for future comparison

Care and Handling

• Avoid dropping or striking the transducer

• Keep the probe face clean and free of hardened couplant

• Inspect the contact surface regularly for wear

• Check the potted cable transition for damage

• Avoid pulling the transducer by the cable

• Do not sharply bend, kink, or pinch the cable

• Protect the probe from temperatures beyond its specified rating

• Remove couplant residue after inspection

• Store in a clean, dry location

• Replace damaged probes when measurement repeatability is affected

About Dakota NDT

Dakota NDT develops ultrasonic thickness gauges, flaw detectors, transducers, cables, couplants, and related accessories for professional non-destructive testing. Its products support corrosion monitoring, fabrication, manufacturing, maintenance, power generation, petrochemical inspection, asset integrity, and industrial quality-control applications.